Inheritable Privilege Set

At login or from a new profile shell, the inheritable set contains
the privileges that have been specified by the administrator. These inheritable
privileges can potentially be passed on to child processes after an exec(1) call. A process should remove
any unnecessary privileges to prevent these privileges from passing on to
a child process. Often the permitted and inheritable sets are the same. However,
there can be cases where a privilege is taken out of the inheritable set,
but that privilege remains in the permitted set.